Fox has been one of the standout youngsters in the Championship this season and it seems only a matter of time before he makes the step-up to the next level.
The 21-year-old is blessed with great pace, but he is also a solid defender and has all of the attributes required to be a top modern day full-back.
West Ham, Newcastle and Villa all see him as someone that could enhance their respective first-teams, with all three looking to recruit more defenders in the summer.
The Hammers have had Carl Jenkinson on loan from Arsenal all season, but doubts remain over his future at the Boleyn Ground as he is set to return to his parent club at the end of the campaign.
Newcastle, meanwhile, simply have a lack of cover in defence and they need to add more players in this position for next season. Fox would be unlikely to displace Daryl Janmaat for a regular first-team place, but he could provide some valuable competition.
Villa, meanwhile, have Alan Hutton currently playing at right-back, but the Scotland international is closer to the end of his career than he is the start and they are clearly starting to look towards the future.